/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield 
 *
 * This library is open source and may be redistributed and/or modified under  
 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
 * (at your option) any later version.  The full license is in LICENSE file
 * included with this distribution, and on the openscenegraph.org website.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
 * OpenSceneGraph Public License for more details.
*/

#ifndef OSGDB_DATABASEREVISIONS
#define OSGDB_DATABASEREVISIONS 1

#include <osg/Node>

#include <osgDB/ReaderWriter>

#include <set>

namespace osgDB {

class OSGDB_EXPORT FileList : public osg::Object
{
    public:

        FileList();
        FileList(const FileList& fileList, const osg::CopyOp=osg::CopyOp::SHALLOW_COPY);

        META_Object(osgDB, FileList)

        typedef std::set<std::string> FileNames;
        FileNames& getFileNames() { return _files; }
        const FileNames& getFileNames() const { return _files; }

        bool empty() const { return _files.empty(); }

        bool containsFile(const std::string& filename) const { return _files.count(filename)!=0; }

        void addFile(const std::string& filename) { _files.insert(filename); }

        bool removeFile(const std::string& filename);

        void append(FileList* fileList);

    protected:

        virtual ~FileList();

        FileNames _files;
};


class OSGDB_EXPORT DatabaseRevision : public osg::Object
{
    public:

        DatabaseRevision();
        DatabaseRevision(const DatabaseRevision& revision, const osg::CopyOp=osg::CopyOp::SHALLOW_COPY);

        META_Object(osgDB, DatabaseRevision)

        void setDatabasePath(const std::string& path) { _databasePath = path; }
        const std::string& getDatabasePath() const { return _databasePath; }

        typedef std::set<std::string> FileNames;

        void setFilesAdded(FileList* fileList) { _filesAdded = fileList; }
        FileList* getFilesAdded() { return _filesAdded.get(); }
        const FileList* getFilesAdded() const { return _filesAdded.get(); }

        void setFilesRemoved(FileList* fileList) { _filesRemoved = fileList; }
        FileList* getFilesRemoved() { return _filesRemoved.get(); }
        const FileList* getFilesRemoved() const { return _filesRemoved.get(); }

        void setFilesModified(FileList* fileList) { _filesModified = fileList; }
        FileList* getFilesModified() { return _filesModified.get(); }
        const FileList* getFilesModified() const { return _filesModified.get(); }

        bool isFileBlackListed(const std::string& filename) const;

        bool removeFile(const std::string& filename);

    protected:

        virtual ~DatabaseRevision();

        std::string             _databasePath;

        osg::ref_ptr<FileList>  _filesAdded;
        osg::ref_ptr<FileList>  _filesRemoved;
        osg::ref_ptr<FileList>  _filesModified;
};

class OSGDB_EXPORT DatabaseRevisions : public osg::Object
{
    public:

        DatabaseRevisions();
        DatabaseRevisions(const DatabaseRevisions& revisions, const osg::CopyOp=osg::CopyOp::SHALLOW_COPY);

        META_Object(osgDB, DatabaseRevisions)

        typedef std::vector< osg::ref_ptr<DatabaseRevision> > DatabaseRevisionList;

        void setDatabasePath(const std::string& path) { _databasePath = path; }
        const std::string& getDatabasePath() const { return _databasePath; }

        void addRevision(DatabaseRevision* revision);
        void removeRevision(DatabaseRevision* revision);

        DatabaseRevision* getDatabaseRevision(unsigned int i) { return i<_revisionList.size() ? _revisionList[i].get() : 0; }

        DatabaseRevisionList& getDatabaseRevisionList() { return _revisionList; }
        const DatabaseRevisionList& getDatabaseRevisionList() const { return _revisionList; }

        bool isFileBlackListed(const std::string& filename) const;

        bool removeFile(const std::string& filename);

    protected:

        virtual ~DatabaseRevisions();

        std::string             _databasePath;
        DatabaseRevisionList    _revisionList;
};

}

#endif
